Which of the Following Is an Advantage of Using Mobile

Which of the following is an advantage of using mobile media as a media vehicle?

A) Many ad sizes available
B) Immediate response
C) Quick placement, local targeting
D) Audience interest
E) High quality graphics/reproduction
According to Ad Lab 9-B, the advantages of using mobile media as a media vehicle are:
(a) immediate response
(b) interactive
(c) personal